Render2D: Add vertex data array size validation to prevent buffer overflows

[seer-by-sentry]

Fixes CLIENT-JJ. The issue was that: Write access violation caused by vertex buffer size mismatch during copy, leading to memory corruption.

• Added validation to ensure vertex, UV coordinate, and color arrays have consistent sizes.
• If array sizes are inconsistent, a WWASSERT is triggered, the rendering is reset, and the function returns to prevent corrupted data.

This fix was generated by Seer in Sentry, triggered automatically. 👁️ Run ID: 2042119

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